When you want to choose waterproof material as your pool base,what is the key points you mostly care about,nothing but the following points:
Cost calculation
Flexibility
Elongation and tensile strength
Width and length per roll
Weather and UV resistance
Lifespan
Taking these into consideration,we recommend BPM HDPE geomembrane,which has all the advantages and popularly used in a lot of applications,to be the priority choice among waterproof materials.
Let us introduce our product as follow:
BPM HDPE Geomembrane Description
Made from high density Polyethylene by blow film process.
Thickness from 0.3~3.0mm. Width : 4~7m. Length as customer demand.
1. Municipal environmental projects, water conservancy projects
2. Landfill cap, mining heap leach pads
3. Pond liner, canal linings, tank linings, raw water treatment reservoirs, retention ponds
4. Waste water treatment lagoon, secondary containment tank.
Benefits of BPM HDPE aquaculture waterproof membrane
1.Environmental friendly non-toxic.
2.Construction cost lower than cement base.
3.Much more smooth than cement base,fish and shrimps are not liable to be injured.
4.Easy to install and remove the waste in pond.
5.The black membrane is preferred due to its lightproof and absorption of heat,restraining the grass from destroying the membrane while keeping warm for the creatures.
Steps to build fish pond
1.Dig a pool firstly.
2.Clear the site, remove the sundries.
3.Dig a anchor groove at the size of 50cm*50cm off the pool bank one meter, in order to install geomembrane easily.
4.Spread the membrane and weld the membranes into together.
5.Fasten it.
6.Water testing.
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Install Guideline
Geomembrane Installation Guideline
Site Consideration
Whenever possible,site selection should avoid areas where flooding or ground water pressure can occur.The lining”bottom”should be well above the water table.
If the site selected is in an area where organics are in the soil,or if gases can be generated by chemical reaction,the design must aloow for venting.
Surface Preparation
Surfaces should be level and free of all sharp rocks(all rocks and stone greater than 0.05diameter),objects,vegetation and stubble.(Soil sterilization may be necessary to kill roots and certain types of grasses.)
The subgrade surface should provide an unyielding foundation for the geomembrane with no sharp or abrupt chanages or break in grade.Proper compaction assures stability and support of the liner.
Groundwater Control
Groundwater should be taken into account and,if present,it will need to be controlled both during and after construction.
One method for controlling groundwater is to develop a drain system under the lining that allows the water to flow laterally under the lining without floating the lining.
Slope
Side slopes should be no steeper than 3:1 when feasible.
Receipt of Liners and Materials
The geomembrane is fabricated into large rolls (at maximum width 7m) to minimum field seaming.
It is recommended that the liners panels’ protective covering not be removed until installation and that any uncovered panels be stored out of direct sunlight.
Anchor Trenches
To secure the edges o the lining in an earthen pit,an”anchor trench” is dug.
Anchor trenches are approx.1.5m away from the pond edge.(standard trench dimensions and depth vary according to project design.)
The trench itself should be free of loose soil and rocks.
Site Structures
Structures,piping,concrete,drains,and any associated work should be completed prior to lining installation.
Liner Deployment
The roll is raised by a loader,forklift,or other lifting equipment,and then unrolled in one direction,and unfolded in the other direction.
Panel Placement
Take time when unloading and placing rolls of lining to avoid damage.Verify the location of a panel or sheet before unrolling and placement to avoid improper alignment.
Sandbags are required to keep the panels in place during installation,exposed or covered.
Care should be taken to avoid wrinkles in the seam areas and around mechanical attachment.
(Note:It takes considerable manpower to deploy a liner.It is “pulled” but not stretched.Minor wrinkles insure the liner is installed in a relaxed condition.)
Field Seaming
When the lining material is High density polyethylene ,the most commonly used process is heat fusion welding,which can be done with hot air or hot wedge.
Pipe Boots
A pipe boot is a method of sealing the liner system to necessary pipes that penetrates the lining system.
Design Notes
Disclaimer:These guidelines are for information purposes only and are intended as illustration or general information only and are not intended as a guarantee or warranty.
BPM Corporation assumes no responsibilities in connection with the use of this information.
